Jockey stick



Nov; 5, 1929. B. R. MANSFIELD JOCKEY STICK Filed Nov. 26, 1927 PatentedNov. 5, 1929 JOCKEY s'r rcx Application filed November 26, 1927. Serial"no. 235,929.

This invention aims to provide novel means whereby the line clamp in adrilling rig may be prevented from turning on the temper screw, theconstruction being such that the temper screw can, nevertheless,continue its right-line vertical reciprocation, as the walking beamwhich carries the temper screw 1s operated.

It is within the province of the dlsclosure to improve generally and toenhance the utility of devices of that type to whlch the 1nventionappertains.

With the above and other objects in view which will appear as thedescription pro- 1 ceeds, the invention residesin the combina:

tion and arrangement of parts and in the details of constructionhereinafter described and claimed, it being understood that changes inthe precise embodimentof the invention herein disclosed, may be madewithin the scope of what is claimed, without departlng from the spiritof the invention.

In the drawings Figure 1 shows in elevation, a port1on of a drilling rigwhereunto the device formlng the subject matter of this application hasbeen connected,

Figure 2 is a horizontal section in which the device, for the most part,appears in'top plan;

Figure 3 is a side elevation of the device per se; and

Figure 4 is a perspective v1ew showing the radius arm. 1

The numeral 1 marksthe walking beam of a drilling or pumping rig, thewalking beam being fulcrumed intermediate its ends, as indicated at 2.The numeral 3 designates a support, sometimes known as the headache postbecause it is provided in order to prevent an operator from beinginjured by falling parts. The temper screw 4 is plvoted to the walkingbeam 1 and is threaded into a hanger 5 including one or. more links 6carrying the clamp 7 which engages and holds the line 8. v

A pivot element 9, such as a bolt, is mounted in the post 3 transverselythereof and passes through a sleeve 10 secured to one end '50 of aradius arm 11, the pivot element 9 and 16 of the link 15 extends betweenthe bifurcations 22 of the radius arm 11 and is mounted pivotally on thebolt 14, the part 16 having a plurality of openings 36 that provide foran adjustable mounting of thelink on the pivot element 14. vThe outerend of the part 17 is received between the inner ends of jaws 18, and bymeans of a bolt 19, or other- ,wise, the inner end of the jaws 18 arecon nected to the outer end of thelpartl7 of the link 15. The part 6 ofthe hanger 5 is re ceived between the jaws 18, and the jaws 18 may beprovided with seats 20 for one side portion of the link 6. The jaws 18are connected by a pair of tightening bolts 21 located on opposite sidesof the seat 20, and immediately adjacentthereto. The jaws 18 areconnected adjacent to their outer ends by tightening bolts 23. which maybe arranged on opposite sides of the outer arm of the link 6. r v i Inpractical operation, the radius arm 11 and the link 15 can swing in avertical plane, with the pivot elements 14 and 9 as centers in orderthat the temper screw 4 may have straight-line vertical movement as thewalking beam 1 swings up and down. However, owing to the fact thatthemember 6 is engaged between jaws 18 on the link 15, the clamp 7 and the.hanger 5 cannot turn on the lower end of the temper screw 4.

What is claimed is 2- 1. In a device of the class described, a radiusarm provided at one end with bifurcations, and supplied at its oppositeend with a laterally off-set sleeve, a pivot element 'mounted in thesleeve, a link, means for connecting one end of the link adjustablybetween the bifurcations of the radius arm, and 7 means mounted on theopposite end of the link for holding a line clamp against rotation.

2. The combination With the line clamp 1 and thesupport of a drillingrig, of a radius arm disposed approximately parallel to the Mile whichthe clamp holds, means for mounting the radius arm at its lower end forswinging movement on the support, toward and away from the clamp a linkdisposed approximately at right angles to the line which the clampholds, means for connecting the outer end of thelink to the clamp, and

an adjustable pivotal connection between the inner end of the link andthe upper end of the radius arm.

In testimony that I claim theforegoing as my. own, I have hereto affixedmy signature.

' BEECH R. MANSFIELD.

